How can PHP developers prevent image overwriting when uploading multiple images with the same name?

When uploading multiple images with the same name, PHP developers can prevent image overwriting by renaming each image file with a unique identifier before saving it to the server. This can be achieved by appending a timestamp or a random string to the original file name. 

// Generate a unique identifier for the image file
$unique_id = uniqid();

// Get the original file name
$original_name = $_FILES['image']['name'];

// Append the unique identifier to the original file name
$new_file_name = $unique_id . '_' . $original_name;

// Save the image file with the new name
move_uploaded_file($_FILES['image']['tmp_name'], 'uploads/' . $new_file_name);

Keywords

PHP image uploading file handling unique filenames file_exists

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